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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtSvg module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #ifndef QSVGHANDLER_P_H |
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43 #define QSVGHANDLER_P_H |
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44 |
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45 // |
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46 // W A R N I N G |
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47 // ------------- |
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48 // |
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49 // This file is not part of the Qt API. It exists purely as an |
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50 // implementation detail. This header file may change from version to |
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51 // version without notice, or even be removed. |
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52 // |
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53 // We mean it. |
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54 // |
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55 |
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56 #include "QtXml/qxmlstream.h" |
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57 |
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58 #ifndef QT_NO_SVG |
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59 |
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60 #include "QtCore/qhash.h" |
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61 #include "QtCore/qstack.h" |
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62 #include "qsvgstyle_p.h" |
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63 #include "private/qcssparser_p.h" |
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64 #include "private/qsvggraphics_p.h" |
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65 |
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66 QT_BEGIN_NAMESPACE |
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67 |
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68 class QSvgNode; |
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69 class QSvgTinyDocument; |
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70 class QSvgHandler; |
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71 class QColor; |
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72 class QSvgStyleSelector; |
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73 class QXmlStreamReader; |
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74 |
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75 struct QSvgCssAttribute |
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76 { |
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77 QXmlStreamStringRef name; |
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78 QXmlStreamStringRef value; |
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79 }; |
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80 |
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81 class QSvgHandler |
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82 { |
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83 public: |
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84 enum LengthType { |
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85 LT_PERCENT, |
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86 LT_PX, |
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87 LT_PC, |
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88 LT_PT, |
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89 LT_MM, |
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90 LT_CM, |
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91 LT_IN, |
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92 LT_OTHER |
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93 }; |
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94 |
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95 public: |
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96 QSvgHandler(QIODevice *device); |
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97 QSvgHandler(const QByteArray &data); |
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98 QSvgHandler(QXmlStreamReader *const data); |
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99 ~QSvgHandler(); |
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100 |
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101 QSvgTinyDocument *document() const; |
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102 |
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103 inline bool ok() const { |
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104 return document() != 0 && !xml->hasError(); |
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105 } |
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106 |
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107 inline QString errorString() const { return xml->errorString(); } |
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108 inline int lineNumber() const { return xml->lineNumber(); } |
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109 |
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110 void setDefaultCoordinateSystem(LengthType type); |
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111 LengthType defaultCoordinateSystem() const; |
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112 |
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113 void pushColor(const QColor &color); |
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114 void pushColorCopy(); |
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115 void popColor(); |
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116 QColor currentColor() const; |
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117 |
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118 void setInStyle(bool b); |
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119 bool inStyle() const; |
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120 |
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121 QSvgStyleSelector *selector() const; |
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122 |
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123 void setAnimPeriod(int start, int end); |
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124 int animationDuration() const; |
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125 |
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126 void parseCSStoXMLAttrs(QString css, QVector<QSvgCssAttribute> *attributes); |
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127 |
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128 inline QPen defaultPen() const |
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129 { return m_defaultPen; } |
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130 |
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131 public: |
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132 bool startElement(const QString &localName, const QXmlStreamAttributes &attributes); |
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133 bool endElement(const QStringRef &localName); |
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134 bool characters(const QStringRef &str); |
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135 bool processingInstruction(const QString &target, const QString &data); |
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136 |
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137 private: |
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138 void init(); |
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139 |
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140 QSvgTinyDocument *m_doc; |
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141 QStack<QSvgNode*> m_nodes; |
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142 |
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143 QList<QSvgNode*> m_resolveNodes; |
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144 |
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145 enum CurrentNode |
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146 { |
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147 Unknown, |
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148 Graphics, |
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149 Style |
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150 }; |
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151 QStack<CurrentNode> m_skipNodes; |
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152 |
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153 /*! |
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154 Follows the depths of elements. The top is current xml:space |
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155 value that applies for a given element. |
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156 */ |
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157 QStack<QSvgText::WhitespaceMode> m_whitespaceMode; |
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158 |
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159 QSvgRefCounter<QSvgStyleProperty> m_style; |
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160 |
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161 LengthType m_defaultCoords; |
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162 |
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163 QStack<QColor> m_colorStack; |
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164 QStack<int> m_colorTagCount; |
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165 |
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166 bool m_inStyle; |
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167 |
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168 QSvgStyleSelector *m_selector; |
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169 |
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170 int m_animEnd; |
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171 |
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172 QXmlStreamReader *const xml; |
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173 QCss::Parser m_cssParser; |
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174 void parse(); |
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175 void resolveGradients(QSvgNode *node); |
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176 |
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177 QPen m_defaultPen; |
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178 /** |
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179 * Whether we own the variable xml, and hence whether |
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180 * we need to delete it. |
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181 */ |
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182 const bool m_ownsReader; |
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183 }; |
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184 |
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185 QT_END_NAMESPACE |
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186 |
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187 #endif // QT_NO_SVG |
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188 #endif // QSVGHANDLER_P_H |